CSA21CSB22NC3VINX4NC5VIN6NC7RAMP28OVPA9UVLO10COMP211SS12SW213HB214HO215NC16LO217PGND18VCC19LO120NC21HO122HB123SW124OVPB25COMP126nFAULT27RAMP128OPT29IPK30VCCA31NC32BRKS33BRKG34CSB135CSA136IOUT137IOUT238EN139SYNCIN40SYNCOUT41ISETD42EN243DIR44ISETA45AGND46OSC47DT48EP49